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  • Elsevier  (107)
  • Oxford University Press  (28)
  • Blackwell Publishing Ltd  (17)
  • Periodicals Archive Online (PAO)  (11)
  • 1980-1984  (163)
  • 1983  (57)
  • 1982  (53)
  • 1981  (53)
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  • 1980-1984  (163)
Year
  • 1983  (57)
  • 1982  (53)
  • 1981  (53)
  • 1984  (42)
  • 1980  (39)
  • 1
    Electronic Resource
    Electronic Resource
    Flagellar Adherence of Crithidia fasciculata Cells in Culture (1983)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 30 (1983), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In early log phase cultures of several of the drug-resistant mutants of Crithidia fasciculata that we have previously obtained, a high percentage of cells attach in pairs at the base of the flagellum. This process, which we have termed “flagellar adherence,” lasts for several hours in some cases and occasionally involves changes in cell morphology. The attachment occurs optimally in gently agitated cultures. Flagellar adherent pairs can be disassociated by vigorous agitation; the pairs reappear in the culture within one to three h after disassociation. These paired forms can be clearly distinguished from the normal cell division forms. Clones of flagellar adherent-competent mutant strains are uniformly able to form these pairs in culture. A low percentage of flagellar adherent forms can be induced in wild type cells by glucose starvation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1983.tb05335.x
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  • 2
    Electronic Resource
    Electronic Resource
    The Incidence of Domestic Rates and Alternative Local Taxes (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Fiscal studies 3 (1982), S. 0 
    Details
    ISSN: 1475-5890
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-5890.1982.tb00567.x
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of food availability, female culture-density and photoperiod on ephippia production in Daphnia magna Straus (Crustacea: Cladocera) (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 13 (1983), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. A method is described whereby ephippia (sexual eggs plus protective membranes) are experimentally induced at low food levels (≤ 0.05 mg spinach D. magna-1), high female culture-densities (≤ 0.4 D. magna ml-1) and in short-day photoperiods (L:D 〈 12:12, 12°C). The density-dependent ephippial response was related to an increased encounter rate between females at the higher densities. External metabolites had no significant effect on ephippia production. Ephippia were formed in the second generation after exposure to short day-lengths. Five clones from the same population exhibited genetic variation in their critical photoperiods for induction of sexual reproduction (≥= 10% ephippia). There was evidence of a genetic difference in photoresponse between two populations of D. magna. The evolution of timing mechanisms for ephippia production are discussed in relation to the predictability of environmental change.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1983.tb00655.x
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  • 4
    Electronic Resource
    Electronic Resource
    A small-scale flood plain (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 29 (1982), S. 0 
    Details
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A miniature, 9 m-wide floodplain, developed along a gravel-washing effluent stream, shows features such as levées, crevasse splays and floodbasins which compare with their larger-scale counterparts. For sediments deposited overbank, median size decreases exponentially with distance from the channel whilst sorting increases, with coarser sediment on the outside of a meander bend. Overbank flows are only a few grain diameters in depth near the channel. This study shows potentially useful systematic relationships in floodplain sediment textures, but it involves only one of a possible variety of floodplain types dominated by overbank sedimentation. This suggests that further exploration of overbank depositional processes is desirable as an aid to field interpretation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3091.1982.tb00092.x
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  • 5
    Electronic Resource
    Electronic Resource
    Wheat Hardness: Time Required to Grind Wheat with the Brabender Automatic. Micro Hardness Tester (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 46 (1981), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The Brabender automatic micro hardness tester was used to measure the time required to grind 4g of wheat. Effects of temperature and moisture were determined. Increasing temperature from 15 to 40°C generally decreased grinding time, but differentiation among samples was better at 15°C than at higher temperatures. Increasing moisture content increased the grinding time of soft wheat much more than it increased the grinding time of hard wheat. The tester can detect differences related to milling properties of hard wheats, hardness among some wheat classes and among some varieties representing a single class of wheat. The instrument can also be used to evaluate hardness of plant-breeders' samples, so that selections with extreme hardness or softness can be discarded, and to distinguish between hard and soft wheats in marketing channels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1981.tb04505.x
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  • 6
    Electronic Resource
    Electronic Resource
    Composition of Guinea Keet Breast and Thigh Meat (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 47 (1982), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Guinea keets, reared to 12 wk on a modified turkey starter and grower diet, were processed like broilers and thigh and breast meat samples analyzed. Proximate analysis for breast and thigh meat without skin was: dry matter 25.4 and 24.0%; protein 22.7 and 19.4%; hexane extractables 0.86 and 2.2%; and ash 1.06 and 1.05% respectively. Total cholesterol in breast meat was 40.6 mg/100g raw tissue, and 62.1 mg in the thigh. Also included were analyses for Na, K, Ca, Mg, P, thiamin, riboflavin, niacin, pantothenic acid and the fatty acid profiles of the meat and skin. Guinea meat was found to be lower in fat, sodium and cholesterol and higher in potassium, phosphorus, thiamin, riboflavin, niacin and vitamin B6 than broiler meat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1982.tb07688.x
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  • 7
    Electronic Resource
    Electronic Resource
    Respiration of the carp, Cyprinus carpio L., at 10 and 20° C and the effects of hypoxia (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 22 (1983), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Oxygen consumption of carp acclimated at 10 and 20° C has been measured under routine conditions. Some complications and precautions necessary in continuous flow respirometry are discussed. Routine Vo2 at different levels of hypoxia have been determined. Individual variation leads to scatter in the data and different methods of plotting the relationship between Vo2 and Po2 are proposed; attention is drawn to differences between inlet (or ambient) Po2 and inspired Po2. Using certain criteria a ‘critical’ oxygen tension of about 95 mm Hg was found at 20° C; Q10 values are about 2 at normoxia and some suggestions of an increase near to the critical oxygen tension were found. Blood samples from the dorsal aorta showed rising Pa,o2 of 16 mm Hg which increased to 70–80 mm Hg when Pinsp was 90 and they then fall as the inspired oxygen is lowered. During periods of deep hypoxia (25 mm Hg) blood lactate concentration increases steadily and indicates an increasing dependence on anaerobic mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1983.tb04221.x
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  • 8
    Electronic Resource
    Electronic Resource
    Gross and fine structure of the pseudo branch of the climbing perch, Anabas testudineus (Bloch) (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 19 (1981), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The structure of the glandular pseudobranch of the air-breathing fish Anabas testudineus is described on the basis of light and electron microscopy. It is shown that the pseudobranch has the same basic structure as a typical gill, although in this case it is not freely exposed to the water.Individual secondary lamellae can be recognized in which well-defined, but narrow, blood channels are present between typical pillar cells. The epithelial layer is mainly represented by enlarged mitochondria-rich cells which constitute a large proportion of the whole organ. Mitochondria-rich cells contain an abundant endoplasmic reticulum which is in close contact with the mitochondria and becomes concentrated near the vascular borders of the cell and opens directly into the basement lamina.The presence of numerous pinocytotic vesicles in the enlarged pillar cell flanges may transfer material to the blood channels. The precise nature and role of any materials released in this way remains to be investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1981.tb05846.x
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of Selenium-Supplemented Torula Yeast Diets on Liver-Mediated Mutagenicity of Aflatoxin B1 (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: To determine the effect of dietary selenium on the mutagenicity of aflatoxin B1 (AFB1), male Sprague-Dawley rats were fed rat chow or Torula yeast diets supplemented with 0.0, 0.1, 0.5, 1.0, and 5.0 ppm Se as Na2SeO3, and the 9000 ×g liver supernatants were used in Salmonella/microsome mutagenesis assays. The rats were fed on the diets for 4 wk and, prior to killing, half the rats in each group received 80 mg phenobarbital/kg body weight in their drinking water for four consecutive days. Phenobarbital administration tended to increase the mutagenicity of AFB1 in all dietary treatment groups. This increase was significant only in the chow-fed groups, however. Addition of selenium to the basal diet produced no significant effect on liver-mediated mutagenicity. The liver preparation from chow-fed animals which had received phenobarbital produced the highest mutagenicity of the samples tested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb14892.x
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  • 10
    Electronic Resource
    Electronic Resource
    DISPLACEMENT AND SKILLCENTRE TRAINING: AN ANALYSIS OF FIRM AND TRAINEE CHARACTERISTICS (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Bulletin of economic research 34 (1982), S. 0 
    Details
    ISSN: 1467-8586
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8586.1982.tb00435.x
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